【摘要】 燥红土薄片的显微镜观察表明 ,由于长期受干热的生物气候条件影响 ,燥红土在发育过程中矿物风化淋溶程度较弱 ,各种分解形态的有机残体数量少 ,有机质含量缺乏。燥红土的主导形成过程是红化作用 ,由于遭受侵蚀 ,燥红土近代成土过程遭受砂化 ,表层呈现漂白砂型土壤微垒结。更多还原

【Abstract】 Microscopical observation of thin sections of a dry red soil shows that the intensity of mineral weathering and eluviation were relatively weak.The quantities of organic residues with various forms and organic matter were less due to the influence of dry tropical bioclimate on dry red soils.Rubification was the dominant soil?forming process of dry red soil.As the natural vegetation was destroyed and the solis were eroded,sandification occurred during modern soil?forming process.The porphyroskelic fabric was changed into the bleached sand fabric in surface layer of dry red soils.更多还原